Richard Crenna as C.J. Arnold

Joanna Pettet as Dr. Caroline Arnold

Andrew Prine as Prof. Raymond Guy

Cassie Yates as Mary Harper

George O'Hanlon, Jr. as Pete Brooks

Lynne Moody as Felicia Allen

Mary Louise Weller as Laurie Belman

Robert Viharo as Dwight

Victor Buono as The Devil

Milton Selzer as The Realtor

Ed Bakey as Sam the Caretaker

Galen Thompson as Emilio Vargas

Emory Souza as The Demon